Why do my trailer lights stop working when I turn on my headlights?
The problem you are having is a classic ground issue. If the ground wire to the trailer frame or the tail light grounds are not connected securely to clean, rust and paint free surfaces then when the headlights are turned the extra amperage draw for the running lights will cause all sorts of lighting issues.
Why are my running lights on my trailer not working?
If there is no power on the running light pin then there is a break or loose connection somewhere between the connector and where it terminates at the front of the vehicle that you will need to track down. Running jumper wires from the light grounds to the main trailer connector ground can help.
When do I turn my head lights on, the brake lights turn on?
The head lights turn on when I turn the switch to the second position, as they should. However, the issue is that when I turn the light switch to the first position, the right and left (not the 3rd center light) brake lights turn on as well as the running lights.
What should I do if my trailer brake light is not working?
If you are having a problem with your brakes on your trailer not lighting up while you’re running lights are on here is a simple solution on how to fix that. Category People & Blogs Show moreShow less Loading… AutoplayWhen autoplay is enabled, a suggested video will automatically play next. Up next
How to tell if a trailer light is on or off?
On the pin for the green wire you should detect a steady signal when the brake is pressed and an on-and-off signal when the right turn signal is on. On the pin for the brown running light wire you should detect a signal only when the vehicle headlights are on.
What happens when the brake light switch is off?
When the light switch is in the off position, all the brake lights work normally. No recent work or accident damage. Start at the rear bulbs. Something is bridging the contacts at the base of one or both bulbs, causing both filaments to light.